<template>
  <common-echart :pos="pos" :option="option" @getMychart="getMychart" width="353" height="150"></common-echart>
</template>

<script setup>
  import { reactive, computed, ref, onMounted, nextTick, getCurrentInstance } from 'vue'
  import commonEchart from '@/components/commonEchart.vue'
  const { pos } = defineProps({
    pos: {
      type: String,
      required: true
    }
  })
  let myChart = ref({})
  const { appContext : { config: { globalProperties } } } = getCurrentInstance()
  const echarts = globalProperties.$echarts
  let dateArr = []
  let date = new Date()
  // let year = date.getFullYear()
  date.setMonth(date.getMonth()+1, 1)//获取到当前月份,设置月份
  for (let i = 0; i < 12; i++) {
    date.setMonth(date.getMonth() - 1);//每次循环一次 月份值减1
    let m = date.getMonth() + 1;
    dateArr.push(m+'月')
  }
  // 定义 data
  let data = reactive({
    myColor: ['#fb6161','#fcba77','#41c7ff'],
    dataList1: [0,0,0,0,0,0,0,3,0,0,0,0],
    dataList2: [0,0,0,0,0,0,0,8,0,0,0,0],
    dataList3: [0,0,0,0,0,0,3,2,0,0,0,0],
    dataTitle: dateArr.reverse(),
    dataSeries: [],
  })
  // 1.1 从接口获取数据
  const getData = async() => {
    const {data: data0} = await getPopulationTotal()
    // console.log(data0);
    if(data0.code != 200){
      return 
    }

    // 1.1.1 获取真实数据data0以后，把data0数据push到data中
    data.dataList1 = []
    data0.data.age.forEach((item, index) => {
      data.dataList1.push(item)
    })
    // 1.1.2 进一步加工
    dealData(data)
  }
  // 1.2 二次加工并更新图表
  const dealData = (data) => {
    
    // 更新图表数据
    fresh(data)
  }

  // 定义图表编辑项 option
  let option = reactive({})
  const getOption = (data) =>{
    return {
      title:{
        text:'单位：个',
        textStyle:{
          fontSize:10,
          color:'#80878a'
        },
        left:'5%',
        top:'0%'
      },
      tooltip: {
        show:true
      },
      grid: {
        // top: '10%',
        bottom:'15%',
        // y: '10%',
        // x2: '4%',
        // y2: '8%',
        width:'80%',
        height:'68%',
        borderWidth: 1
      },
      legend: {
        icon: "circle",
        itemWidth: 5,
        itemHeight: 5,
        itemGap: 2,
        right:'30',
        textStyle: {
          color: "#FFFFFF",
          fontSize: 10
        }
      },
      xAxis: [{
        type: 'category',
        data: data.dataTitle,
        splitLine: {
          show: false,
        },
        axisLabel: {
          show:true,
          interval:0,
          textStyle: {
            color: '#80878a',
            fontSize: 10
          },
        },
        axisLine: {
          show: true,
          lineStyle: {
            type:'solid',
            color:'#B1B1B1',
            width:1
          }
        },
        axisTick: {
          show: false,
        }
      }],
      yAxis: [{
        type: 'value',
        splitLine: {
          show: true,
          lineStyle: {
            type: "dotted",
            color: '#556468'
          }
        },
        axisLabel: {
          show:true,
          textStyle: {
            color: '#80878a',
            fontSize: 10,
          },
          // formatter: '{value}%',
          // margin: 5,
        },
        axisLine: {
          show:true,
          lineStyle: {
            color: 'grey',
            width: 2
          }
        },
        axisTick: {
          show: false,
        }
      }],
      series: [{
        name: '特大',
        type: 'line',
        label: {
          show: false
        }, 
        data: data.dataList1,
        symbol:'circle',
        symbolSize:5,
        areaStyle: {
          color:new echarts.graphic.LinearGradient(0, 0, 0, 1, [
            { offset: 0, color: 'rgba(251, 97, 97, 1)' },
            { offset: 1, color: 'rgba(11, 164, 159, 0) ' }
          ]),
        },
        itemStyle: {
          color:'#fb6161',
            borderType:'solid',
          borderWidth:1,
          borderColor:'#fb6161',
        },
      },{
        name: '较大',
        type: 'line',
        label: {
          show: false
        }, 
        data: data.dataList2,
        symbol:'circle',
        areaStyle: {
          color:new echarts.graphic.LinearGradient(0, 0, 0, 1, [
            { offset: 0, color: 'rgba(252, 186, 119, 1)' },
            { offset: 1, color: 'rgba(11, 164, 159, 0) ' }
          ]),
        },
        symbolSize:5,
        itemStyle: {
          color:'#fcba77',
          borderType:'solid',
          borderWidth:1,
          borderColor:'#fcba77',
        },
      },{
        name: '一般',
        type: 'line',
        label: {
          show: false
        }, 
        data: data.dataList3,
        symbol:'circle',
        // color:'#41fff9',
        areaStyle: {
          color:new echarts.graphic.LinearGradient(0, 0, 0, 1, [
            { offset: 0, color: 'rgba(65, 199, 255, 1)' },
            { offset: 1, color: 'rgba(11, 164, 159, 0) ' }
          ]),
        },
        symbolSize: 5,
        itemStyle: {
          color: '#41c7ff',
          borderType: 'solid',
          borderWidth: 1,
          borderColor: '#41c7ff',
        },
      }],
    }
  }
  

  // 3. 得到mychart实例并暴露出去，处理进一步交互
  let getMychart = ([myChart_0, id]) => {
    myChart.value = myChart_0
  }

  // setOption 这里不需要修改
  let fresh = (data) => {
    nextTick(() => {
      // 处理好data后，拿去生成option
      option = getOption(data)
      myChart.value.setOption(option)
    })
  }

  onMounted(()=> {
    // 1. 若接入了数据，运行
    // getData()

    // 2. 若没有接入数据，运行
    dealData(data)
  })

</script>

<style lang="scss" scoped></style>